what the hell is a nug i keep hearin people say it but i dunno what it means. im good on most other words its just this one i got trouble with.
1 Improper use of contact lenses or steroid eyedrops can lead to fungal infections, which in turn can cause corneal ulcers. Also, a corneal injury that results in plant material getting into the eye can lead to fungal keratitis.  Acanthamoeba are microscopic, single-celled amoeba that can cause human infection.
Causes of dog eye infection includes: 1  various forms of bacteria ulcer/keratitis or corneal infection. pinkeye (conjunctivitis) 2  viruses like the Herpes virus. 3  glaucoma. 4  foreign material. 5  irritants in the eye. 6  Lyme disease. more information...